The Men's Long-Sleeved Pima Cotton Shirt by Patagonia is a stalwart long-sleeved shirt made from exceptionally fine, yarn-dyed organic pima cotton, now with an updated, more-trim fit and lightweight buttons.

A 20-year Patagonia classic: this lightweight, resilient, yarn-dyed 100% organic cotton shirt has a dense, supple weave that feels exceptionally smooth against the skin. It comes in eye-pleasing plaid patterns and colors. It's also socially versatile, transitioning easily from the taco stand to dinner with the boss. Details include button-through chest pockets, a shirttail hem and an updated, relaxed fit.

I wear this shirt through fall and Winter. I am 5'10" at 170 lbs. The medium fits perfectly. The colors are unique and the cotton fabric is very comfortable. The shirts come out of the dryer without needing an iron. I buy it when on sale and have about 5 varieties.